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“Sprint does not infringe” the three patents, its lead lawyer, Brian Riopelle, said in his summation. “Comcast has tried to obscure the boundaries” of the patents and make them cover too much.

Comcast’s complaint said that “Sprint has had knowledge” of the patented technology since at least November 2008 and “Sprint’s infringement has been willful since that time.”

Mentioned in court papers were parts of Sprint functions such as Sprint Mobile Integration, which expands mobile phone capabilities; use of Google Voice, for online voice mail; and Airave 2, which provides a boosted wireless signal.